Ernesto Valverde is yet to decide whether Andres Iniesta can be risked in Wednesday's Champions League tie against Chelsea, with the Barcelona captain struggling to recover from a hamstring injury.
Iniesta was forced off during Barca's 1-0 LaLiga defeat of title rivals Atletico Madrid on March 4 and has not played since, missing the weekend win over Malaga.
The midfielder has returned to training but Valverde will assess his performance in Tuesday's session before making a final decision on his availability.
"He's done well in training but we can't say whether or not he will play yet," Valverde told reporters.
"It's a huge game but you need to be 100 per cent fit to play. It depends whether he trains today.
"Tomorrow is a must-win situation so you need to take risks, as long as they are not too excessive.
"But you also do not want to compromise the safety of the player."
Sergio Busquets: "Andrés Iniesta helps us a lot on and off the field. He always brings something different to the team. We will see if he can help us tomorrow, after training we will know" #BarçaChelsea pic.twitter.com/GvqusRUzrD— FC Barcelona (@FCBarcelona) March 13, 2018
With Iniesta absent and Lionel Messi unavailable due to the birth of his third son, Ousmane Dembele excelled in Barca's defeat of Malaga on Saturday and the France international is a contender to start against Chelsea.
"It was against 10 men but he did perform very well and he offers something very different to the team," said Valverde, who confirmed Sergi Roberto should be fit to play despite missing training.
Chelsea's defensive tactics restricted Barca to minimal chances in the first leg, but a mistake from Andreas Christensen led to Iniesta setting up Messi for a crucial away goal in a 1-1 draw.
And Valverde expects Antonio Conte's men to line up in a similar shape when they visit Camp Nou, where they are unbeaten in their last four visits.
"In the first leg we saw Chelsea's virtues," Valverde said. "We don't know if they will attack or defend, it depends what the score is.
"The initial result is good for us but we have to play our game and be ourselves. Chelsea are a team that can score at any time.
"They can take different approaches, they showed that in London. But when they push back and defend strong they are hard to break through. Maybe the secret is to keep pressing, but they are also very strong on the counter-attack.
"Tomorrow we have to be wary of the threats of Chelsea, they are a threat from set-pieces and on the counter-attack and we have to be careful about that."
|NFL Draft 2018: Jets acquire number three overall pick from Colts|
|Board accepts responsibility for West Ham woes, Brady claims|
|In-form Eriksen hopes he hasn´t hit Tottenham ceiling|
|Roma boss Di Francesco happy with Messi, Barca challenge|
|Bangladesh warned over ´unacceptable´ Colombo behaviour|
|The directors know where to find me - Gattuso awaits Milan talks|
|Laidlaw breaks Italian hearts in Rome|
|UMBC´s March Madness win earns everyone in USA free pizza|
|Zidane focused on Real Madrid players, not Neymar|
|Mourinho´s United rant recalls unhappy Madrid demise|
|Swansea City 0 Tottenham 3: Eriksen leads Kane-less Spurs into FA Cup semis|
|Valverde not worried about Barcelona legacy|
|Markelle Fultz´s return remains a mystery to Brett Brown|
|Bale is happy at Real Madrid, says Zidane|
|Spalletti seeks consistency as Inter prepare for final push|
|Absence of ´best in the world´ Busquets makes Rakitic key for Barca|
|I was out of the game - Halep offers no excuses for Osaka shock|
|Tigers spoil Slater´s 300th NRL game, wins for Penrith and Warriors|
|A-League Review: Sydney stumble again as Jets close gap|
|Highlanders claim derby win over Crusaders, Brumbies beat Sharks|
|Dreadshock! Neymar reveals new hairdo|
|Shakib and Nurul sanctioned for unruly Colombo conduct|
|Villarreal defender Semedo denied bail on attempted murder charge|
|Boots up! - Pietersen career seemingly over|
|Messi: I´m a less selfish player|
|F1 2018 Pre-Season Report: Williams|
|F1 2018 Pre-Season Report: Renault|
|Thunder claim key win, injury-ravaged Warriors fall to Kings|
|Japanese sensation Osaka blitzes Halep en route to decider|
|Giant-slaying Kasatkina upstages Venus to reach Indian Wells final|
|Coaching Italy would be extraordinary – Mancini|
|J.J. Watt breaks news of Tyrann Mathieu´s deal with Texans|
|Super Bowl champion LeGarrette Blount joins Lions|
|Intensity key to Liverpool toppling Man City, says Klopp|
|Warriors star Durant to miss at least two weeks with rib injury|
|Doc Rivers fined $15,000 for calling officiating ´complete joke´|
|Ravens sign WR Michael Crabtree to three-year deal|
|Tiger stumbles as Stenson and DeChambeau move clear|
|Tiger Woods: I just tried not to shoot myself out of tournament|
|Del Potro to meet Raonic in semis|
|People listen to idiots - Mourinho cites ´dictionary of life´ in extraordinary rant|
|Mourinho tells struggling Manchester United stars to ´grow up´|
|Woods seven off Bay Hill lead after level-par second round|
|Real Madrid links ´massage the ego´ of Roma goalkeeper Alisson|
|Defending champions Rhinos end Saints´ unbeaten start|
|Pele impressed by Tite´s ability to cope with Brazil´s modern challenges|
|Duhan at the double to boost Edinburgh´s playoff hopes|
|FIFA Council approves open vote for 2026 World Cup|
|McIlroy in love with golf again ahead of Augusta challenge|
|Vikings sign DT Sheldon Richardson|
|FIFA approves VAR use at World Cup|
|Sampaoli ignores Icardi and Dybala, adds Correa to Argentina squad|
|Vikings celebrate Cousins capture as AFC lags behind in NFL ´arms´ race|
|Neymar to Real Madrid? Ask Florentino Perez, says Emery|
|Pogba not as good as Kondogbia - Valencia boss Marcelino|
|Buffon: Most determined team will win Juventus-Madrid tie|
|Inter target Martinez likened to Aguero by Crespo|
|Dortmund boss Stoger defends Gotze criticism|
|Chaos in Colombo as Mahmudullah blasts Tigers into final|
|Filipe Luis relishes overcoming ´obstacle´ as broken leg rules him out for two months|
|Blind cut from Koeman´s first Netherlands squad|
|Australia aim to find an answer to counter ´fantastic´ De Villiers|
|Stenson & DeChambeau tied for Arnold Palmer Invitational lead|
|Huddersfield wrap up permanent Lossl deal|
|Liverpool versus City promises goals, Juve plot Madrid revenge - Champions League quarter-finals in|
|Sharapova to miss Miami with forearm injury|
|Valencia midfielder Coquelin suffers torn Achilles|
|I could be in a league that´s won before kick-off – The best quotes from Mourinho´s tirade|
|Pardew fights on after West Brom talks|
|Juanfran hamstring injury adds to Atletico Madrid´s problems|